This is the 2524th most frequent Swedish word.
lektion
"Lesson" or "class session."
Here, 'lektion' refers to a scheduled period of instruction in the subject of mathematics.
Vi har en lektion i matematik idag.
We have a lesson in mathematics today.
In this sentence, 'lektion' represents a single event or session of teaching.
Hennes lektion om historia var mycket intressant.
Her lesson on history was very interesting.
Here, 'lektion' refers to the instructional content or plan being prepared.